Improvement in bit-stock wrenches



. Q. S. BAGKUS. Bit-Stock Wrench.

No. 216,776. Patented June 24, 1879.

eldest avid M IINITED STATES PATENT OFFICE.

QUIMBY S. BAGKUS, OF NEW YORK, N. Y.

IMPROVEMENT IN BIT-STOCK WRENCHES.

Specification forming part of Letters Patent No. 216,776, dated June 24,1879; application filed April 30, 1879.

To all whom it may concern:

Be it known that I, QUIMBY S. BAOKUS, of New York city, in the county ofNew York and State of New York, have invented certain new and usefulImprovements in Bit- Stock Wrenches; and I do hereby declare thefollowing to be a full, clear, and exact descrip tion of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and'to letters of reference marked thereon, which form a part of thisspecification.

This invention relates to that class of tools whichhave comeinto generaluse in which the same implement is intended to answer several distinctpurposes, the object in the present case being to take an implement thatmay be attached to the ordinary bit-stock, and shall be capable ofperforming the various functions of a wrench and tool-holder, and whichmay be called a bit-stock wrench and the invention consists in theconstruction and arrangement of the several parts of the implement, soas to perform the above-named functions, all as will be hereinafterfully set forth, and then specifically stated in the claims.

In the drawings, Figure 1 is a perspective view of the implement withthe jaws open as when used for a wrench. Fig. 2 is a side view with thejaws closed. Fig. 3 is alongitudinal section, showing the relativearrangement of the several parts of the device. Fig. 4: exhibits theimplement provided with a ratchet and made capable of attachment to anordinary brace.

In constrncting this implement, the shank a is formed with a slot, (1,in its larger end, which end is expanded into a conical shaped frustuin,acting as a guide for the expandingjaws b, which are each pivoted at thepoint 0 within the slot to the shank a. A screw-thread is formed uponthe body of the shank, upon which is placed the funnelshaped sleeve d,threaded internally to correspond with screw-thread upon the shank. Asthis sleeve is moved downward upon the shank it allows the jaws b toexpand, and whenmoved in the opposite direction, or toward the end ofthe shank, the jaws are forced toward each other, causing them to graspand hold firmly any object placed between them.

In order thatthe jaws may automatically follow the movement of thesleeve, a spring, 0, is placed in cavities formed for its reception ineach jaw, which, by its elasticity, keeps them pressed continually outagainst the sleeve, while offering no material obstacle to their beingclosed by its action.

The outer ends of the jaws, at b, are fitted to act either as a wrenchor'tool-holder in the last-named function, being materially assisted bythe perforated bar e, which crosses the slot a formed in the end of theshank at a point which enables it to receive the ends of the toolsplaced between the jaws, thus causing the axial line of the tool and itsholder to coincide, and preventing all wabblin g or eccentric movementof the bit or other tool held by the jaws.

I11 order to allow the jaws to close fully at semicircular recess isformed in each at a point opposite to the bar 0, which, when the jawsapproach each other closely, embrace the bar, thus enabling the jaws tograsp and hold the smallest bit or other tool used with a brace, whiletheir ends 1) form a wrench, which is readily adjustable to nuts orbolts of different sizes, and which, by reason of the capability ofattachment of the implement to the ordinary bit-brace, enables the userto screw up nuts or bolts much faster than it can possibly be performedby the screw-wrench in ordinary use.

' It is obvious that 'the brace-wrench hereinbefore described can beattached to any ordinary bitbrace, angleborer, or tool-holder withoutdeparting from the spirit of my in vention, and to such holders andbraces I intend to apply it.

Having thus described my invention, 1 claim as new, and desire to secureby Letters Patent, the following: 1. The pivoted jaws b andfunnel-shaped sleeve (1, in combination with the perforated crossbar c,for the purpose of retaining the axis of the tool and holder in the sameline, as set forth.

2. The slotted shank a and apertured crossbar 6, in combination with thepivoted jaws 1), spring 0, and sleeve 0?, all arranged for jointoperation in the manner specified.

In testimony that I claim the foregoing I have hereunto set my hand this28th day of April, 1879.

Witnesses: QUIMBY S. BAOKUS.

WM. J. BELL,

JOHN F. KAVANAGH.

